I'm losing my hair :(

Ever since I started my Hypothyroid medication my hair has been falling out. Today I noticed a lot of thinning on my right side. I started crying and I feel really depressed about it. I don't know if I want to go outside anymore. I don't really have anybody to talk about this. I'm new to this. I never in a million years thought this would happen to me. I had thick hair. Any advice ladies?